import {mapGetters} from 'vuex'

export default {
  computed:{
    ...mapGetters('m_cart',['total'])
  },
  onShow(){
    this.setBadge()
  }, 
  watch:{
    total(){
      this.setBadge()
    }
  },
  methods:{
      setBadge(){
        uni.setTabBarBadge({
          index:2,
          text:this.total+''
        })
      }
    }
}